The 'dead man walking' disorder: an update on Cotard's syndrome

Area of Science:

• Neuroscience
• Psychiatry
• Clinical Psychology

Background:

• Cotard's syndrome, first described in 1880, presents with melancholic anxiety, delusions of damnation, self-harm ideation, and beliefs of non-existence or immortality.
• The syndrome's complex nature complicates diagnosis and treatment within various neurological and psychiatric disorders.
• Despite its recognition, Cotard's syndrome lacks a distinct classification in major diagnostic manuals like ICD and DSM-5.

Purpose of the Study:

• To provide an updated overview of current perspectives on Cotard's syndrome.
• To propose a potential systematization of this elusive nosological entity.
• To integrate recent advancements in clinical, psychopathological, and psycho-neurobiological research.

Main Methods:

• Literature review of clinical case studies and theoretical developments.
• Analysis of psychopathological manifestations and neurobiological underpinnings.
• Synthesis of recent research findings on Cotard's syndrome.

Main Results:

• Cotard's syndrome is characterized by a spectrum of severe psychiatric symptoms, including nihilistic delusions and immortality beliefs.
• The syndrome is frequently associated with other psychiatric and neurological conditions, complicating its independent characterization.
• Current research highlights the need for a clearer nosographic definition and understanding of its psycho-neurobiological basis.

Conclusions:

• Cotard's syndrome represents a significant diagnostic challenge due to its complex presentation and overlap with other disorders.
• Further research integrating clinical, psychopathological, and neurobiological data is crucial for its classification and effective management.
• A systematic approach is needed to refine our understanding and diagnostic criteria for Cotard's syndrome.